text: β-Diketiminates (BDI, also known as NacNac), are a commonly used class of supporting ligands that have been successfully adopted to stabilize an extensive range of metal ions from the s, p, d, and f-blocks in multiple oxidation states. The popularity of these monoanionic N-donor ligands can be explained by their convenient access and high stereoelectronic coordination. This enables the separation of highly reactive coordinatively unsaturated complexes. Moreover, studies have demonstrated the utility of this class of ligands for designing active catalysts for various transformations. So, because of that, beryllium can properly coordinate with β-diketiminate compounds due to the high reactivity and stereo electronic coordination with the beryllium thus a Be NacNac compound is also common in organoberyllium chemistry.